Issued by the People’s Republic of Romania (R.P. Romîna) in 1955, this striking four-stamp set celebrates Ziua Forțelor Armate—the Day of the Armed Forces, observed on October 2. Each value honors a branch of national defense: the 55 bani stamp depicts a statue symbolizing the unity of Romania’s armed services; the 75 bani shows an armed guard before industrial works, representing the defense of socialist progress; the 1.75 lei portrays a sailor raising the national flag aboard a warship; and the 3.30 lei airmail issue features a pilot with jet aircraft in flight. Rendered in monochrome tones of brown, carmine, blue, and violet, the designs embody mid-century socialist realism and patriotic pride. A key post-war military commemorative set admired by collectors of Eastern European philately.